Two resistance `R_(1)` and `R_(2)` when connected in series and parallel with `120 V` line, power consumed will be `25 W` and `100 W` respectively. . Then the ratio of power consumed by `R_(1)` to that consmed by `R_(2)` will be
A. `1 : 1`
B. `1 : 2`
C. `2 : 1`
D. `1 : 4`